Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 26-10-2019 and time 15:38:37 (Italy) in region 7 km W Arquata del Tronto (AP)

A magnitude ML 0.7 earthquake occured in region: 7 km W Arquata del Tronto (AP), on

  • 26-10-2019 13:38:37 (UTC)
  • 26-10-2019 15:38:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7950, 13.2210 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Arquata del Tronto AP 7 1178 1178
Norcia PG 10 4957 6135
Montegallo AP 11 523 6658
Accumoli RI 11 667 7325
Castelsantangelo sul Nera MC 13 281 7606
Montemonaco AP 15 604 8210
Acquasanta Terme AP 16 2916 11126
Preci PG 18 724 11850
Ussita MC 18 444 12294
Visso MC 19 1107 13401
Cascia PG 19 3217 16618
Amatrice RI 19 2657 19275
Montefortino FM 19 1178 20453

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
51 Km N of L'Aquila (69753 inhabitants)
54 Km E of Terni (111501 inhabitants)
76 Km E of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
92 Km NW of Chieti (51815 inhabitants)
95 Km S of Ancona (100861 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km NE of Tivoli (56533 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.7 2019-10-26
13:38:37		 42.7947 13.2213 10 2019-10-26
13:50:59		 Sala Sismica INGV-Roma 73456411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-26 13:38:37 ± 0.03
Latitude 42.7947 ± 0.0018
Longitude 13.2213 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73456411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 329
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29318
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 73456411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-26 13:50:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2019-10-26T13:38:56.44 3.0 undecidable manual Pn 0.08 0
IV.RM33.EHZ. 2019-10-26T13:38:48.24 0.3 undecidable manual S 181 31.746 50 -0.01 74
IV.CAMP.HHE. 2019-10-26T13:38:48.39 0.6 undecidable manual S 152 32.5452 50 -0.08 49
IV.FDMO.HHZ. 2019-10-26T13:38:47.44 0.3 undecidable manual S 338 28.9488 50 -0.07 74
IV.SMA1.EHZ. 2019-10-26T13:38:44.97 0.6 undecidable manual S 153 20.4684 116 -0.01 51
IV.FDMO.HHZ. 2019-10-26T13:38:43.16 0.3 undecidable manual P 338 28.9488 50 0.05 74
IV.CAMP.HHE. 2019-10-26T13:38:43.59 0.6 undecidable manual P 152 32.5452 50 -0.07 49
IV.MMO1.EHZ. 2019-10-26T13:38:43.07 0.6 undecidable manual S 36 14.4744 125 -0.11 50
IV.MTRA.HNZ. 2019-10-26T13:38:43.43 0.6 undecidable manual S 106 14.874 124 0.13 50
IV.RM33.EHZ. 2019-10-26T13:38:43.56 0.6 undecidable manual P 181 31.746 50 0.03 49
IV.MC2.EHZ. 2019-10-26T13:38:42.63 0.3 undecidable manual S 349 13.1757 127 -0.2 74
IV.MF5.EHZ. 2019-10-26T13:38:42.94 0.6 undecidable manual P 42 28.8489 50 -0.16 48
IV.MURB.HHZ. 2019-10-26T13:38:42.72 3.0 positive manual P -0.05 0
IV.FEMA.HNN. 2019-10-26T13:38:42.34 0.1 undecidable manual P 323 23.2545 113 0.19 97
IV.LNSS.HNN. 2019-10-26T13:38:42.71 0.1 undecidable manual P 215 25.8519 50 0.08 99
IV.NRCA.HHZ. 2019-10-26T13:38:41.74 0.3 undecidable manual S 296 9.6792 136 -0.18 75
IV.SMA1.EHZ. 2019-10-26T13:38:41.43 0.1 undecidable manual P 153 20.4684 116 -0.21 97
IV.MTRA.HNZ. 2019-10-26T13:38:40.87 0.3 undecidable manual P 106 14.874 124 0.2 74
IV.NRCA.HHZ. 2019-10-26T13:38:40.00 0.3 undecidable manual P 296 9.6792 136 0.12 76
IV.MC2.EHZ. 2019-10-26T13:38:40.53 0.1 undecidable manual P 349 13.1757 127 0.13 100
IV.MMO1.EHZ. 2019-10-26T13:38:40.65 0.3 undecidable manual P 36 14.4744 125 0.05 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.7 0.00003275 1.26 AML other m 2019-10-26T13:38:46.34
IV.SMA1.EHN. ML:0.6 0.0000312 1.52 AML other m 2019-10-26T13:38:47.08
IV.RM33.EHN. ML:0.7 0.00002265 0.54 AML other m 2019-10-26T13:38:49.37
IV.RM33.EHE. ML:0.9 0.000035199999999999995 0.7 AML other m 2019-10-26T13:38:49.40
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download